<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>测试</title>
</head>
<body>
    <div style="font-size:50px;color:red;width:500px;height:300px;margin:100px auto;text-align:center;">我是测试页面</div>
</body>
</html>
